Well I was looking for Fremont's ordinance on keeping chickens and found them. Looks like the one on the site is wrong. Here is the correct and official one:
http://www.codepublishing.com/ca/fremont/
Sec. 3-5803. Chickens, rabbits, geese, ducks, bees, pigeons, doves: Permit required.
Chickens, ducks, geese, rabbits, pigeons, doves and bees may be kept for noncommercial recreational, educational or food source use on a lot used primarily for residential purposes, provided that an animal fancier’s permit has been obtained from the animal services supervisor.
(1) The number of such animals allowed shall be based on lot area (except as provided for in section 3-5804 of this chapter) as follows:
(a) Lots with an area of one acre or more: Not more than twenty adult rabbits or twenty-five chickens, including two roosters, or four geese or ten ducks or five beehives or a combination of forty pigeons and/or doves.
(b) Lots with an area of one-half acre or more: Not more than fifteen adult rabbits or twenty chickens, including one rooster, or three geese or six ducks or five beehives or a combination of thirty pigeons and/or doves.
(c) Lots with an area of ten thousand square feet or more: Not more than eight adult rabbits or ten chickens, roosters not permitted, or two geese or three ducks or three beehives or a combination of twenty-five pigeons and/or doves.
(d) Lots with an area of eight thousand square feet or more: Not more than six adult rabbits or six chickens, roosters not permitted, or one goose or two beehives or a combination of twenty pigeons and/or doves.
(e) Lots with an area of six thousand square feet or more: Not more than four adult rabbits or four chickens, roosters not permitted, or one goose or one beehive or a combination of fifteen pigeons and/or doves.
(2) The issue born of such animals which increases the total number upon the premises beyond the numbers permitted shall be removed from one lot no later than sixteen weeks from birth.
(3) Structures, fences or enclosures for the keeping of such animals shall be subject to the rules and regulations established by the animal services supervisor.
(Ord. No. 1116, § 1, 10-12-76; Ord. No. 1221, § 7, 1-24-78; Ord. No. 2214, § 1, 1-14-97.)
http://www.codepublishing.com/ca/fremont/
Sec. 3-5803. Chickens, rabbits, geese, ducks, bees, pigeons, doves: Permit required.
Chickens, ducks, geese, rabbits, pigeons, doves and bees may be kept for noncommercial recreational, educational or food source use on a lot used primarily for residential purposes, provided that an animal fancier’s permit has been obtained from the animal services supervisor.
(1) The number of such animals allowed shall be based on lot area (except as provided for in section 3-5804 of this chapter) as follows:
(a) Lots with an area of one acre or more: Not more than twenty adult rabbits or twenty-five chickens, including two roosters, or four geese or ten ducks or five beehives or a combination of forty pigeons and/or doves.
(b) Lots with an area of one-half acre or more: Not more than fifteen adult rabbits or twenty chickens, including one rooster, or three geese or six ducks or five beehives or a combination of thirty pigeons and/or doves.
(c) Lots with an area of ten thousand square feet or more: Not more than eight adult rabbits or ten chickens, roosters not permitted, or two geese or three ducks or three beehives or a combination of twenty-five pigeons and/or doves.
(d) Lots with an area of eight thousand square feet or more: Not more than six adult rabbits or six chickens, roosters not permitted, or one goose or two beehives or a combination of twenty pigeons and/or doves.
(e) Lots with an area of six thousand square feet or more: Not more than four adult rabbits or four chickens, roosters not permitted, or one goose or one beehive or a combination of fifteen pigeons and/or doves.
(2) The issue born of such animals which increases the total number upon the premises beyond the numbers permitted shall be removed from one lot no later than sixteen weeks from birth.
(3) Structures, fences or enclosures for the keeping of such animals shall be subject to the rules and regulations established by the animal services supervisor.
(Ord. No. 1116, § 1, 10-12-76; Ord. No. 1221, § 7, 1-24-78; Ord. No. 2214, § 1, 1-14-97.)